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Table 4 Atlantoaxial linear measurements (appliance-specific evaluation)

From: Therapeutic effects of functional orthodontic appliances on cervical spine posture: a retrospective cephalometric study

Linear parameter (mm)

Active group

p-values

BJA group

p-values

McRae (Ba-opisthion)

0.25 ± 1.46

0.3291

0.38 ± 2.37

0.4199

Chamberlain (opisthion-PNS)

1.28 ± 2.33

0.0034*

0.69 ± 2.95

0.2394

McGregor (PNS-SO)

1.12 ± 2.80

0.0283*

-0.29 ± 4.00

0.7127

CVT

1.78 ± 2.66

0.0006**

0.33 ± 2.05

0.4174

OPT

4.74 ± 3.73

< 0.0001**

2.69 ± 4.01

0.0021*

AT

-0.02 ± 1.92

0.9589

-0.67 ± 2.72

0.3543

Ranawat (mpA-maA-maX)

0.35 ± 1.39

0.2005

-0.08 ± 1.11

0.7639

Powers ratio (SO-D/Ba-apA)

1.74 ± 6.31

0.1564

-3.18 ± 6.11

0.0477*

Chamberlain’s distance

-0.13 ± 2.35

0.7466

-0.21 ± 2.15

0.6200

Redlund-Johnell/Petersson (McGregor-mC2)

2.07 ± 2.29

< 0.0001**

0.85 ± 2.40

0.0835

  1. Data are given as mean differences (± SD) between posttreatment and baseline values.
  2. p-values refer to intragroup comparisons.
  3. Asterisks (* or **) indicate significant (p < 0.05) or highly significant (p < 0.001) differences.